Most people have an aversion to injecting drugs, especially intravenously; it’s referred to as “the needle barrier.” For much of the 20th century, this aversion was a powerful deterrent to the use... Read more »
By Corinne Graffunder, PhD, (Director of the Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention) The Centers for Disease... Read more »